Update set-up-your-development-environment.md

Added minor clarification for SPFx 1.19.

Author: hugoabernier

docs/spfx/set-up-your-development-environment.md

@@ -42,7 +42,9 @@ You can check if you already have Node.js already installed, including installed
 node --version
 ```
 
-The SharePoint Framework v1.18.* is supported on the following Node.js versions:
+SharePoint Framework v1.19.* is supported on Node.js v18 LTS (*aka: Hydrogen*).
+
+SharePoint Framework v1.18.* is supported on the following Node.js versions:
 
 - Node.js v18 LTS (*aka: Hydrogen*)
 - Node.js v16 LTS (*aka: Gallium*)